make: do not run coverage file unless clean of coverage targets are run

This reduces flat make time by half

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

Rules.mk

@@ -24,9 +24,13 @@ include $(dir)/Rules.mk
 dir := cmd/ipfs
 include $(dir)/Rules.mk
 
-# has to be after cmd/ipfs due to PATH
-dir := coverage
-include $(dir)/Rules.mk
+# include this file only if coverage target is executed
+# it is quite expensive
+ifneq ($(filter coverage% clean,$(MAKECMDGOALS)),)
+	# has to be after cmd/ipfs due to PATH
+	dir := coverage
+	include $(dir)/Rules.mk
+endif
 
 dir := namesys/pb
 include $(dir)/Rules.mk

coverage/Rules.mk

@@ -32,7 +32,7 @@ $(d)/ipfs: $(d)/main
 
 CLEAN += $(d)/ipfs
 
-ifneq ($(filter coverage,$(MAKECMDGOALS)),)
+ifneq ($(filter coverage%,$(MAKECMDGOALS)),)
 	# this is quite hacky but it is best way I could fiture out
 	DEPS_test/sharness += cmd/ipfs/ipfs-test-cover $(d)/coverage_deps $(d)/ipfs
 endif